Perform the Indicated Operations $\left( - 2 x ^ { 2 } + 7 x + 5 \right) - \left( - 6 x ^ { 2 } - 9 x + 1 \right) - \left( 6 x ^ { 2 } + 8 x + 5 \right)$

Multiple Choice

Perform the indicated operations. $\left( - 2 x ^ { 2 } + 7 x + 5 \right) - \left( - 6 x ^ { 2 } - 9 x + 1 \right) - \left( 6 x ^ { 2 } + 8 x + 5 \right)$

A) $- 2 x ^ { 2 } + 8 x - 1$
B) $- 7 x ^ { 2 } + 8 x - 7$
C) $- 2 x ^ { 2 } + 8 x + 1$
D) $- 7 x ^ { 2 } + 8 x - 1$
E) $2 x ^ { 2 } + 8 x - 1$